Answer:
20.2 mm.
Step-by-step explanation:
2*2 + 2*8.1
= 4 + 16.2
= 20.2 mm.
Answer:
(29.14 ; 30.06)
Step-by-step explanation:
Given that'
Sample size (n) = 57
Mean (m) = 29.6
Population standard deviation (σ) = 2.7
Confidence interval = 80%
= (1 - 0.8) / 2 = 0.1
Mean ± z * σ/√n
Using the Z probability calculator : Z0. 1 = 1.28
Hence,
29.6 ± 1.28 * (2.7 / √57)
29.6 - (1.28 * 0.3576237) ; 29.6 + (1.28 * 0.3576237)
29.142241664 ; 30.057758336
(29.14 ; 30.06)
To get that, you have to multiply the both numbers, which is 24*12=288
The lines that Mark drew are perpendicular.
Answer:
I believe the answer is D. 
Hope i'm right
Step-by-step explanation:
